I know it might not be of much help but ibuprofen helps a lot with pain and reducing inflammation. My mother is a nurse and she always suggests that when something like this comes up. I hope that helps at least a little.
Hi there, I just wanted to say hi, I to have the very same problem, I don't work sadly because of my feet, I suffer badly from chronic daily headaches, fibromyalgia , and blood condition called Polycythaemia Vera( where I have to many red blood cells). I don't spend a lot of time on my feet, but when I do, boy do I pay for it that night, they swell in the heat, here in new Zealand, Chch we had a hot day yesterday, I went and seen a doc, he said sadly he couldn't offer and help to my problem, other than, stay off them and put them up. I am putting on the weight like nothing, I use to weight about 68 kg, now around 98 kgs mostly around the tummy, where it to is swollen i believe. Anyway I do hope you find some answers to your problem all the best. I hope you have a wonderful Xmas and happy new year.